Machine for stoking gas-retorts.



Patented Aug. 7 191 '9 SHEET SSHEET 1.

lllJlllrl r J. TERRACE.

MACHINE FOR STOKING GAS RETORTS. APPLICATION FILED NOV. 24, 1915.

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J. TERRACE.

MACHINE FOR STOKING GAS RETOHTS.

1917. 9 SHEETS-SHEET 2.

Patented Aug. 7

APPLICATION HLED NOV, 24.19%- 1,235,740.

INVENTORJ don/vli-nrmcs' BY: I

A1- TOR/VE'Y.

1. TERRACE.

MACHINE FDR STOKING GAS RETORTS. APPLICATION FILED NOV, 24. 1915.

1,235,740, Patented Aug. 7, 1917.

9 SHEETS-SHEET 3- A-rramvEw J. TERRACE.- MACHtNE FOR STOKING GASRETORTS.

APPLICATION FILED NOV. 24.4915.

Patented Aug. 7,, 1917 '9 SHEETS-SHEET 4.

Iwv ENTOR! dobw T'mmcs [ATTORNEY- l. TERRACE.

MACHINE FOR sroxme GAS RETORTS.

APPLICATION FILED NOV. 24, 1915.

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ATTORNEY.

J.-TERRACE.

MACHINE FOR STOKING GAS BETORTS.

APPLICATION FILED NOV.-24. I915- Patented Aug. 7,1917.

9 SHEETS-SHEET 6.

' f/vvs/v-ro'n domv TERRACE.

APPLICATION FILED NOV, 24,l915.

Patented Aug. 7, 1917.

9 SHEETS-SHEET 7- INvE/v-fon: domv "FER/mu? J. TERRACE.

MACHINE FOR STOKING GAS RETORTS..

APPLICA'HON FILED NOV- 24. I915- Patented Aug. 7,1917.

9 SHEETS-SHEET 8.

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MACHINE FORSTOKING GAS RETORTS.

APPLICATION FILED NOV. 24, 1915.

Patented Aug. 7, 1917.

9 SHEETS-:SHEET 9.

Iv vEA/Ton: JOHN YER/M ATromvwL,

entrain s ra rns PATENT orrion.

JOHN rnnnnon, or GRIMSBY, ENGLAND, ASSIGNOB, 11 0' JAMES ALDRIDGE, orWESTMINSTER, LONDON, ENGLAND.

GEORGE WILLCOX MACHINE FOR STOKING GAS-RETQRTS.

Specification of Letters Patent.

Application filed November 24, 1915. Serial No. 63,230.

To all whom it may concern:

Be it known that I, JOHN TERRACE, a subject of the King of Great Britainand Ireland, residing at Grimsby, England,

have invented certain new and useful Improvements in Machines forStoking Gas- Retorts and the like, of which the following is aspecification.

This invention relates to machines or apparatus for charging gas retortsand the like with coal or simultaneously charging through retorts withcoal and discharging or pushing out the coke or spent charge and has forits object to simplify the construction of such machines or apparatusparticularly the parts which are required to enter the retort, and toenable-the maximum quantity of coal to be introduced at each charge.

In the well-known Fiddes-Aldridge type of gas retort stoking machine the'coal is introduced into the retort by a conveyer or charging memberformed of vertical side plates with swinging push platessuspendedbetween them on distance stays or bars, the

.coal being fed between the vertical side means located outside theretort for feeding 1 or propelling the coal forward along the bottom ofthe retort between the side plates of the scoop as the scoop is advancedinto the retort, said propelling means being adapted to replace entirelyor in part the usual push plates, employed for pushing the charge intothe retort. A hinged push plate is'provided at the forward end of thescoop and adapted to push out the spent charge in the usual manner asthe scoop enters the retort, and means are also provided for preventingthe withdrawal of the charge as the scoop is withdrawn from the retort.

In a practical form of the invention the coal propelling means consistsof an endless band conveyer mounted on suitable supports on thetraveling machine anddriven therefrom. The scoop lies immediately overthe conveyer, the coal being fed into the same and being supported andfed forward by the conveyer which may be driven at the same speed as thescoop. As the scoop completes its feed stroke, a stop plate is advancedover the conveyer and apron plate and held in the mouth of the retort,as hereinafter described during the return movement of the scoop. v

The vertical side plates of the scoop are preferably connected andmaintained at the Patented Aug. '7, 1917. r

required distance apart by arched stays andmay be rigid or jointed inthe well known The invention is hereinafter described I ings in whiohFigure l is a sectional side elevation of part of a retort charging anddischarging machine showing the machine end of the scoop, the endlessband conveyer, the stop with its operating mechanism winding drum andpart of the main framework of the traveling machine upon which thecharging V and discharging apparatus is mounted.

-Fig. 2 is a plan illustrating the part of the scoop shown in Fig. l andthe stop.

Figs. 1 and 2 are sectional elevation and sectional plan respectivelytaken through a retort showing the scoop in position therein. Fig. 3 isa rear end elevation of part of the-main framework of the machineillustrating' principally mechanism connected with the stop plate.

Figs. 4i and 5 are sectional side elevation and plan respectively of aportion of the machine illustrating on a larger scale the endless bandconveyer and 7 Figs. 6 and 7 are detail views of driving gear for theband conveyer.

Figsr8 and 9 are elevation and plan respectively ofthe apron plateandadjacent parts of the traveling machine'to which the apron plate isattached.

In the drawing, the scoop is shown partly in Figs. 1 and 2 and partly inFigs. 1 and 2 which are continuations in elevation and plan respectivelyof Figs. 1 and 2 and said scoop is constructed of side plates aconnected together and maintained-at the desired distance apart byarched stays or distance. pieces 6.. .At the forward end a push plate ais arranged for pushing out the spent charge and is hinged in the usualmanner.

The side plates at of the scoop may be each formed in one continuouslength, or they may be divided into sections in the manner illustratedin the drawings, such sections being hinged together in the well-knownmanner as described, for example in connection with the conveyer orcharging and discharging member of the Fiddes-Aldridge stoking machinedescribed in U. S. Patent No. 756,225.

In this form the scoop can be wound on a drum such as 0 which serves foradvancing the scoop into the retort or withdrawing same 1n the usualway.

Below the chute (Z which is connected with the feed hopper not shown,and serves for depositing the coal between the side plates a of thescoop. an endless band conveyer is mounted being supported on rollers 7carried o'n bearing brackets g which are bolted to the verticallyadjustable channel frame members 7), of the traveling machine the endbearings being mounted to slide in their supportingbrackets and providedwith screws 9 'er'eby the tension of the conveyer band can be adjusted.

For driving the band conveyer e a toothed wheel 2' is mounted on thedrum 0 and actuate's a pinion 7' keyed to one end of a shaft ls whichrotates in a bearing bracket Z bolted to a frame member m forming partof the vertically adjustable frame of the traveling machine as clearlyshown in Figs. 6 and 7. Power is conveyed to the conveyer c from theshaft by chain or other gear a for which purpose chain wheels 0 0 aremounted on the shaft and end roller of the conveyer respectively asshown.

it stop plate 7) shown in Figs. 1 and 2 is lived to a guide rod '(1arranged to slide in guides r and is normally held in a retractedposition behind the conveyer e by a weight 5 connected with the stopplate by 'wire ropes or chains 8 led over suitable guide pulleys on thetraveling machine. Pins S on the side plates of the scoop are arrangedto engage the stop plate and carry it forward with the scoop to pushinto the retort the last portion of the charge over the apron plate,and. when the stop plate reaches the position she vn in Figs. 1 and '2inside the mouth of the retort, the guide rod 9 is engaged by a catch twhich maintains the stop plate in position during the subsequentwithdrawal of the scoop thus preventing any portion of the'charge ofcoal from being dragged out of the retort by the scoop. *vVhen the scoopleaves the retort the stop is released by a trigger or tappet u on thedrum '0 which tilts the catch 25' allowing the stop plat'e'to be drawnback by the weight 8. An apron-or bridge plate 4; is mounted 'on thetraveling machine and arranged to bridge the space between the conveyerband and retort mouth and to form a bottom for the scoop as it passesbetween the traveling machine and the retort mouth.

As clearly shown in Figs. 8 and 9, the

apron plate '22 is trough-shaped and pivoted to the main frame at 42being connected by ropes w or the like with a counterweight not shown.The apron plate may be in two pieces hinged at and is raised and loweredin the known manner being supported when horizontal by a cord or chain.anchored to the main frame. p In operation the coal is fed by the chute(Z between the Slide plates of the scoop on to the band conveyer e whichis driven as the scoop is advanced over the apron or bridge plate intothe retort.

The coal the full depth of the scoop is thus set in motion in a forwarddirection and as each successive sup-ply falls between the side platesof the scoop, the forward motion given to the coal while lying on thecon- 'veyer 6 serves to carry it over the apron or bridge plate '2')into the retort mouth from whence it is pushed along the floor of theretort to the far end by the action of the coal behind as it is fed intothe retort by the endless band conveyer or apron and with the aid of theside plates at of the scoop which is caused to travel forward in theusual way sii'nultaneously with the coal. 1 By this means coal can beplaced evenly from end to end of the retort. When the scoop iscompleting its feed stroke the automatic stop 2) is brought forward andheld in p'osltio'n at the mouth of the retort so that the withdrai'valof the scoop does not at the coal feed hoppers, hoisting gear foradjusting the charging and discharging apparatus to the re'torts, andother motor driven gear for operating the scoop and coal propellingmeans but such traveling machine and equipment in so far as they arecommon to gas stoking apparatus at present in use need not be furtherdescribed here.

That I claim and desire to secure by Letters Patent is 1. In a chargingand discharging device for gas retorts comprising a bottomless scoophaving hinged side plates; means for connecting opposite sideplates; aconveyer coeperati-ng with said scoop; a device for feeding materialinto said scoop and on to the said conveyer; -'a bridging member betweensaid conveyerand the retort; a drum for taking up the scoop and forprojecting it into and withdrawing it from the retort; driving means forsaid drum and for said conveyer-5 a stopwdevice operative within saidscoop and means for holding the same in position to prevent the draggingback of the material when the scoop is withdrawn from the retort.

2. In a device as described, a bottomless scoop having hinged sideplates and a pusher at its forward end; a conveyer cooperating with saidscoop; a bridging means between said conveyer and the retort; a drum forprojecting the scoop into and withdrawing it from the retort; means fordriving said drum and means for transmitting power from said drum tosaid conveyer.

3. In a device as described, a bottomless scoop having side plateshingedly connected to each other; spacer bars connecting opposite sideplates; an endless conveyer cooperating with said scoop; a device forfeeding material into said scoop and onto said conveyer; a bridgingmember between said conveyer and the retort; a drum for projecting thescoop into and withdrawing it from the retort; driving means for saiddrum and said conveyer; a stop device operative within said scoop andnormally located at the rear of said conveyer; means for bringing saidstop device forward to the mouth of the retort; device for holding saidstop in position to prevent the dragging back of the material when thescoop is withdrawn and means for returning the stop to its initialposition.

4. In a device as described, a bottomless scoop having jointed sideplates; spacer bars connecting opposite side plates; a conveyercooperating with said scoop; a bridging member between said conveyer'andsaid retort; a drum for taking up the scoop and for projecting the sameinto and withdrawing it from the retort, and means for-driving said drumand said conveyer either simultaneously or alternately.

5. In a device for charging or charging and discharging gas retortscomprising a bottomless scoop having spaced side plates; a conveyorcooperating with said scoop; a bridging member between said conveyer andthe retort; a stop device operative within said scoop, and pins on theinside faces of said side plates adapted to engage said stop device.

6. In a device as described, a bottomless scoop having jointed sideplates; spacer bars connecting opposite side plates; a drum forprojecting the scoop into and withdrawing it from the retort; a stopdevice operative within said scoop; pins on the inside faces of saidside plates, adapted to engage said stop device as the scoop isprojected into the retort and releasing means for returning the stopdevice to its initial position.

7. I11 a charger or discharging charger for gas retorts comprising abottomless scoop having hinged side plates; an endless conveyercooperating with said scoop; a stop plate operative in said scoop, andmeans for advancing the stop plate into the retort and for withdrawingit therefrom.

8. In a device for charging and discharging gas retorts, the combinationof spaced side plates connected together and forming a bottomless scoop;a bridging member forming a temporary bottom for the scoop as it ismoved into the retort; a device for feeding material into said scoop,and conveying means located outside of said retort for propelling thematerial along the bottom of the retort as the scoop is projected intosaid retort.

9. In a device as described, a bottomless scoop; means for projectingsaid scoop into the retort and for withdrawing it therefrom; a stopdevice operative within said scoop; means on said scoop to engage saidstop device and to advance it into the retort; means for holding thestop device in position to maintain the charge in the retort during thewithdrawal of the scoop, and

means for returning the stop device to its normal position.

In testimony whereof I have affixed my signature, in presence of twowitnesses.

JOHN TERRACE.

Witnesses:

A. J. ELMER, J. WALKER HARTLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). G.

